18516938

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{3989}}^1$

素因数の和:4213

約数の個数: 16

約数和(自身を含む): 30451680

約数和(自身を除く): 11934742

約数列:

[1, 2, 11, 22, 211, 422, 2321, 3989, 4642, 7978, 43879, 87758, 841679, 1683358, 9258469, 18516938]

約数ペア:

[(1, 18516938), (2, 9258469), (11, 1683358), (22, 841679), (211, 87758), (422, 43879), (2321, 7978), (3989, 4642)]